The best replacement for traits is characteristics.

The best alternatives to traits are rated as following:
★★★★★  characteristics
★★★  skills
★★  qualities
★★  states
★★  feelings
★  learned traits
★  values
★  behavior
★  types
★  attributes
★  socialization and experience
★  recessive traits
★  genes
★  behaviors
★  strengths
★  inherited traits
★  personality
★  mixins
★  attitudes
  learned behaviors
  learned behavior
  behaviours
  personality disorder
  dispositions
  alleles
  environmental traits
  features
  theories of leadership
  leader traits
  trades
  multiple alleles
  personality disorders
  personality traits
  american traits
  attitude
  diseases
  physical traits
  intellectual traits
  environmental

Your alternative for traits is not listed? Suggest!
Speaking about traits, one probably shouldn't forget about incomplete dominance.

Other search terms related to traits and their ratings are:
★★★★★ incomplete dominance
★ meanings
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Google Trends

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traits
characteristics
skills